| 基于CMDLAC指标和遗传算法的结构损伤定位研究 |
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| 引用本文： | 黄天立,楼梦麟,任伟新.基于CMDLAC指标和遗传算法的结构损伤定位研究[J].计算力学学报,2009,26(4):529-534. |
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| 作者姓名： | 黄天立 楼梦麟 任伟新 |
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| 作者单位： | 1. 中南大学土木建筑学院,长沙,410075
2. 同济大学土木工程防灾国家重点实验室,上海,200092 |
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| 基金项目： | 国家自然科学基金(50708113,50678173);;中国博士基金(20080430152)资助项目 |
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| 摘 要： | 提出了基于综合多损伤定位保证准则(CMDLAC)指标和遗传算法(GA)的结构损伤定位方法。基于结构损伤标量模型,结合灵敏度分析提出了基于频率和振型变化的CMDLAC指标,将损伤识别问题转化为约束优化问题,最后以CMDLAC指标为优化目标函数应用遗传算法求解实现了结构的损伤定位。在考虑测试自由度不完备和测量噪声等因素影响的情况下,对桁架结构损伤的数值模拟分析表明了方法的有效性,验证了CMDLAC指标定位损伤和抵抗噪声的能力,同时指出其具有较强的实际可操作性。
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| 关 键 词： | 损伤定位 灵敏度分析 遗传算法 CMDLAC指标 |
| 收稿时间： | 2007/8/18 0:00:00 |
Structural damage localization based on the CMDLAC and genetic algorithm |
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| HUANG Tian-li,LOU Meng-lin and REN Wei-xin.Structural damage localization based on the CMDLAC and genetic algorithm[J].Chinese Journal of Computational Mechanics,2009,26(4):529-534. |
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| Authors: | HUANG Tian-li LOU Meng-lin and REN Wei-xin |
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| Institution: | 1.Central South University;Changsha 410075;China;2.State Key Laboratory for Disaster Reduction in Civil Engineering;Tongji University;Shanghai 200092;China |
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| Abstract: | A damage localization method based on the Combined Multiple Damage Location Assurance Criterion(CMDLAC) and genetic algorithm(GA) is proposed.Based on the damage scalar model and combined with the sensitivity analysis,the CMDLAC based on the change of frequencies and mode shapes between the undamaged and damaged states was proposed.The damage identification problem is transformed to the constrained optimization problem.Applying the genetic algorithm,the damage localization was realized through solving the o... |
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| Keywords: | damage localization sensitivity analysis genetic algorithm the combined multiple damage location assurance criterion |
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